| Characterization of essential oil profile in different ecotypes of Satureja hortensis |
| کد مقاله : 1285-ICOC |
| نویسندگان |
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مهدی محب الدینی *1، ندا تاریوردیزاده2 1هیات علمی 2دانشگاه تربیت مدرس |
| چکیده مقاله |
| Summer savory (Satureja hortensis L.) is an important medicinal and aromatic plant, valued for its essential oil, particularly bioactive components such as carvacrol and thymol [1]. Understanding how genetic background and nutrient management influence the essential oil profile is crucial for optimizing both yield and quality. In this study, the effects of ecotype and fertilization treatments on the phytochemical composition of essential oils were evaluated in three Iranian ecotypes of summer savory Shiraz, Karaj, and Mashhad. The experiment was conducted as a factorial randomized complete block design with three replications, including six fertilization treatments: control (no fertilizer), chemical fertilizer (NPK 20–20–20 at 50 and 100 kg ha⁻¹), and organic sheep manure (25 and 50 t ha⁻¹). Essential oils were extracted from aerial parts and analyzed by GC–MS, and the main chemical constituents were identified and quantified using standard methods based on retention indices and mass spectral matching with reference libraries [2]. The analysis of variance revealed that ecotype, fertilization, and their interactions significantly affected the main essential oil components, particularly thymol and carvacrol. The Karaj ecotype under 100 kg ha⁻¹ NPK fertilization exhibited the highest levels of carvacrol, β-bisabolene, spathulenol, and caryophyllene oxide, indicating a strong response to chemical nutrient inputs. The Mashhad ecotype showed a distinct preference for organic fertilization, as sheep manure at 25 t ha⁻¹ led to elevated concentrations of linalool and carvacrol acetate. Meanwhile, the Shiraz ecotype accumulated higher amounts of γ-terpinene and p-cymene under chemical fertilizer treatments. Overall, the findings highlight that both genetic diversity and fertilization treatments the critical roles in defining the essential oil profile of S. hortensis. For conventional cultivation aiming at high carvacrol content, the Karaj and Shiraz ecotypes under chemical fertilization are recommended. In contrast, organic production systems may benefit from the Mashhad ecotype with sheep manure application [3]. |
| کلیدواژه ها |
| Carvacrol, Ecotype, Essential oil, Fertilization, GC–MS, Thymol |
| وضعیت: پذیرفته شده |